高温高压条件下可燃气体爆炸极限测定标准对比研究

Comparative Study on Determination Standards for the Explosion Limits of the Combustible Gas at High Temperature and Pressure

可燃气体(蒸气)爆炸极限是表征其燃烧爆炸可能性的重要参数之一,也是安全预警阈值设定的主要依据,高温高压下爆炸极限测定与常温常压下有较大差异。本文从测定范围、测定装置、测定原理、点火方式、判定依据等方面对比分析了国内外爆炸极限的测定标准,重点比较了高温高压条件下爆炸现象的判定标准及方法。该研究对高温高压下爆炸极限的测定及相关标准制修订具有重要意义。

The explosion limits of combustible gases(vapors) are one of the important parameters to describe the possibility of combustion and explosion, and also the main basis for setting the safety warning threshold.The determination of explosion limits at high temperature and pressure are quite different from that at normal temperature and pressure. In this paper, the Chinese and foreign determination standard for explosion limits are compared and analyzed from the aspects of measurement scope, measurement apparatus, determination principle,ignition method and explosion criterion, and the determination standard and method of explosion phenomenon at high temperature and pressure are also compared. This study is of great significance to the determination of the explosion limits and the revision of relevant standards.